[pahr-tish-uhn, per-]
a division into or distribution in portions or shares.
a separation, as of two or more things.
something that separates or divides.
a part, division, or section.
an interior wall or barrier dividing a room, area of a building, enclosure, etc., into separate areas.
a septum or dissepiment, as in a plant or animal structure.
Law. a division of property among joint owners or tenants in common or a sale of such property followed by a division of the proceeds.
Logic. the separation of a whole into its integrant parts.
a mode of separating a positive whole number into a sum of positive whole numbers.
the decomposition of a set into disjoint subsets whose union is the original set: A partition of the set (1, 2, 3, 4, 5) is the collection of subsets (1), (2, 3), (4), and (5).
Rhetoric. (in a speech organized on classical principles) the second, usually brief section or part in which a speaker announces the chief lines of thought to be discussed in support of his or her theme.
verb (used with object)
to divide into parts or portions.
to divide or separate by interior walls, barriers, or the like (sometimes followed by off ): to partition off a dormitory into cubicles.
to divide (a country or territory) into separate, usually differing political entities. Compare Balkanize.
Law. to divide property among several owners, either in specie or by sale and division of the proceeds.

1400–50; late Middle English < Latin partītiōn- (stem of partītiō) division, equivalent to partīt(us) past participle of partīrī to divide (see party) + -iōn- -ion

partitionable, adjective
partitionary, adjective
partitioner, partitionist, noun
partitionment, noun
prepartition, noun, verb (used with object)
subpartition, noun
subpartitioned, adjective
subpartitionment, noun
unpartitioned, adjective

1. See division. 11. portion, apportion.

2. unity. 11. unite. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
partition (pɑːˈtɪʃən)
1.  a division into parts; separation
2.  something that separates, such as a large screen dividing a room in two
3.  a part or share
4.  a division of a country into two or more separate nations
5.  property law a division of property, esp realty, among joint owners
6.  maths any of the ways by which an integer can be expressed as a sum of integers
7.  logic, maths
 a.  the division of a class into a number of disjoint and exhaustive subclasses
 b.  such a set of subclasses
8.  biology a structure that divides or separates
9.  rhetoric the second part of a speech where the chief lines of thought are announced
10.  (often foll by off) to separate or apportion into sections: to partition a room off with a large screen
11.  to divide (a country) into two or more separate nations
12.  property law to divide (property, esp realty) among joint owners, by dividing either the property itself or the proceeds of sale
[C15: via Old French from Latin partītiō, from partīre to divide]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1430, "division into shares, distinction," from O.Fr. particion, from L. partitionem (nom. partitio) "division, portion," from partitus, pp. of partire "to part" (see part (v.)). Sense of "that which separates" first recorded 1486. The verb is from 1741.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

partition par·ti·tion (pär-tĭsh'ən)

  1. The act or process of dividing something into parts.

  2. The state of being so divided.

  3. A wall, septum, or other separating membrane in an organism.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Cultural Dictionary

partition definition

A division of a nation or territory into two or more nations. Cyprus, Germany, India, Ireland, Korea, Palestine, and Vietnam are notable examples of countries that have undergone partition.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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